/*-------------------------------------------------------------------------
 *
 * String-processing utility routines for frontend code
 *
 * Utility functions that interpret backend output or quote strings for
 * assorted contexts.
 *
 *
 * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/fe_utils/string_utils.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef STRING_UTILS_H
#define STRING_UTILS_H

#include "libpq-fe.h"
#include "pqexpbuffer.h"

/* Global variables controlling behavior of fmtId() and fmtQualifiedId() */
extern int	quote_all_identifiers;
extern PQExpBuffer (*getLocalPQExpBuffer) (void);

/* Functions */
extern const char *fmtId_internal(const char *identifier, bool force_pg_mode);
extern const char *fmtQualifiedId(int remoteVersion,
			   const char *schema, const char *id, bool force_pg_mode);
#define fmtId(identifier) fmtId_internal(identifier, false)

extern char *formatPGVersionNumber(int version_number, bool include_minor,
					  char *buf, size_t buflen);

extern void appendStringLiteral(PQExpBuffer buf, const char *str,
					int encoding, bool std_strings);
extern void appendStringLiteralConn(PQExpBuffer buf, const char *str,
						PGconn *conn);
extern void appendStringLiteralDQ(PQExpBuffer buf, const char *str,
					  const char *dqprefix);
extern void appendByteaLiteral(PQExpBuffer buf,
				   const unsigned char *str, size_t length,
				   bool std_strings);

extern void appendShellString(PQExpBuffer buf, const char *str);
extern bool appendShellStringNoError(PQExpBuffer buf, const char *str);
extern void appendConnStrVal(PQExpBuffer buf, const char *str);
extern void appendPsqlMetaConnect(PQExpBuffer buf, const char *dbname);

extern bool parsePGArray(const char *atext, char ***itemarray, int *nitems);

extern bool appendReloptionsArray(PQExpBuffer buffer, const char *reloptions,
					  const char *prefix, int encoding, bool std_strings);

extern bool processSQLNamePattern(PGconn *conn, PQExpBuffer buf,
					  const char *pattern,
					  bool have_where, bool force_escape,
					  const char *schemavar, const char *namevar,
					  const char *altnamevar, const char *visibilityrule, bool lower_object);

#endif							/* STRING_UTILS_H */
